function disableselect(e){  
	return false  
}  

function reEnable(){  
	return true  
}  

//if IE4+  
document.onselectstart=new Function ("return false")  
document.oncontextmenu=new Function ("return false")  
//if NS6  
if (window.sidebar){  
	document.onmousedown=disableselect  
	document.onclick=reEnable  
} 